Finding the Fourth Proportional to 86,423.32, 129,639.66 and 27,263.44
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Solution
The fourth proportional to 86,423.32, 129,639.66 and 27,263.44 is: 40,896.64
Step by Step Solution
- Step 1: Write the proportion equation
86,423.32 : 129,639.66 = 27,263.44 : x - Step 2: Convert to fraction form
86,423.32/129,639.66 = 27,263.44/x - Step 3: Cross multiply
86,423.32x = 129,639.66 × 27,263.44 - Step 4: Simplify right side
86,423.32x = 3,534,423,092.03 - Step 5: Solve for x
x = 3,534,423,092.03/86,423.32 - Step 6: Final answer
x = 40,896.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.